The Las Vegas police released documents and records describing the mental health breakdowns that the man who killed four people in a New York building had faced earlier.

A New York City office building where a gunman killed four people then himself has reopened a week after the deadly shootings. On Monday, workers trickled back into 345 Park Avenue in Midtown Manhattan, a skyscraper home to high-profile tenants including the NFL and asset management firm Blackstone.